A sparkler is a type of handheld firework that produces bright, colorful sparks when ignited. Typically made of a metal wire coated with a mixture of combustible materials, sparklers are popular during celebrations like New Year's Eve, Independence Day, and birthday parties. They burn slowly, allowing users to enjoy the display while holding them safely. Sparklers come in various sizes and colors, often emitting different effects such as crackling or sparkling. While they are generally considered safe for outdoor use, it is important to handle them with care and follow safety guidelines to prevent burns or accidents.